Answer:
The Law of Land Warfare, Uniform Code of Military Justice, and Code of Conduct.
Step-by-step explanation:
These are the documents that give structure to the army's moral standards. These are important documents as they ensure that the army does not become ruthless, overly cruel or self-interested. It also reminds the army of its duty to protect citizens. In a wider sense, soldiers also take moral cues from the Constitution and the Declaration of Independence.